desktop-packages team mailing list archive

[Thucydides411 <57797@xxxxxxxxxxxxxxxxxx>]

hdante, just a few comments/questions:

> 2) Xiph vorbis encoder merged AoTuV tunings

What version of the AoTuV tunings have been merged into the Xiph
encoder? The version of oggenc that ships with Ubuntu can't go down to
32 kb/s, which is a sign that it's using the old, unpatched reference
encoder, rather than the AoTuV tunings.

> 3) the best lossy open source audio codec is opus:
http://xiph.org/press/2012/rfc-6716/

Opus and Vorbis have different uses. Opus is superior in certain
applications, like streaming over a variable-bitrate channel in the
presence of substantial packet loss, and VOIP with low latency. But
Vorbis with AoTuV tunings has far superior sound quality for music,
especially at low bitrates, than the reference Opus encoder, and has
better support on a range of devices. The fact that Opus is better for
some applications shouldn't prevent Ubuntu from shipping with the best
free/open source encoder available.

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to libvorbis in Ubuntu.
https://bugs.launchpad.net/bugs/57797

Title:
  include aoTuV patch

Status in Medibuntu:
  Invalid
Status in Ogg Vorbis:
  Confirmed
Status in “libvorbis” package in Ubuntu:
  Confirmed
Status in “libvorbis” package in Debian:
  Fix Released

Bug description:
  Would be nice to include aoTuV [1] Release 1 patch to libvorbis. aoTuV is an improved libvorbis encoder, that, while keeping ABI compatibility, gives many improvement:
  * better quality at all bitrates versus libvorbis-1.1.2 [2], giving aoTuV better quality than other codec (AAC, MP3, MPC, WMA, ...) [3];
  * support of quality down to -2 (32kb/s at 44kHz stereo), versus -1 (45kb/s at 44kHz stereo) of libvorbis-1.1.x;
  * encoding speed 10% better thanks to the included Vorbis-OptSort patch (improve ordering loop);

  aoTuV Release 1 have just been releases. aoTuV Release 1 is the same
  as of beta4.51 (released on 2005-11), renamed after a lot of testing
  of the audio community (especially on hydrogenaudio forum [4]) and
  this is the reccomended vorbis encoder [5].

  [1] aoTuV site: http://www.geocities.jp/aoyoume/aotuv/
  [2] comparison of aoTuV beta 4 vs libvorbis-1.1.x: http://wiki.xiph.org/index.php/VorbisEncoders
  [3] Wikipedia test of vorbis vs other codecs: http://en.wikipedia.org/wiki/Vorbis#Codec_comparisons
  [4] hydrogenaudio forum: http://www.hydrogenaudio.org
  [5] Recommended Ogg Vorbis: http://wiki.hydrogenaudio.org/index.php?title=Recommended_Ogg_Vorbis

To manage notifications about this bug go to:
https://bugs.launchpad.net/medibuntu/+bug/57797/+subscriptions